Unfortunately have to have long lost the Okularabschluss DK-25 from my Nikon D5300. Now finally had to get a replacement. The first impression is very positive. I think now the Nikon DK-20 eyecup better than the "original part". The "element" can be slid nicely on the lead - snaps - fits. The rubber is soft. Let's see how they are rated at the next photo session.